"Even with all the evidence before us we are still opening new coal mines, extending Heathrow airport and pushing forward with fracking. Most of the stuff that you go and buy in the supermarket... it's all imported. Ozone helps filter out harmful ultraviolet light from the Sun, which can increase the risk of skin cancer. It is the name for the annual UN negotiations on climate change under what is called the United Nations Framework Convention on Climate Change (see UNFCCC). It compels us to rethink the way we produce, use, and consume energy; how we manufacture and build; and how we manage our land and ecosystems. As the Arctic sea-ice melts, the surface changes from being a bright reflective white to a darker blue or green, which allows more of the Sun’s rays to be absorbed.

They can be small scale in the form of exhaust from a car or methane from a cow, or larger-scale such as those from coal-burning power stations and heavy industries.Extreme weather is any type of unusual, severe or unseasonal weather.

The gas can then be reused, or injected into deep underground reservoirs. One big concern is that carbon held in frozen ground in arctic regions will be released as methane as temperatures rise and the ground thaws. The process would be carbon neutral if the amount taken out and the amount released were identical. The long-term trend continues upwards with 2015, 2016, 2017 and 2018 being the warmest years on record.Green energy, sometimes called renewable energy, is generated from natural, replenishable sources. There is a fear that the stream could be disrupted if rising temperatures melt more polar ice, bringing an influx of freshwater.A hydrocarbon is a substance consisting entirely of hydrogen and carbon. A company or country can also achieve net zero by means of carbon offsetting. What does it mean in practice? Under the Paris agreement, the EU has committed to carbon neutrality by the second half of the 21st century.

Carbon capture is sometimes referred to as geological sequestration.

The EU will need to update its long-term climate goals in 2020. Negotiations are always difficult because many countries are heavily dependent on fossil fuels and worry about the effects of any change on their economies.Means carbon dioxide, a naturally occurring gas which is also a major product of human activity such as burning fossil fuels.

The EU’s current goal is to reduce its EU leaders will discuss climate change and the EU’s long-term climate goals during their December summit and the EU is expected to submit its updated climate strategy to the UN in early 2020.Read what the European Parliament is doing to ensure that the EU will fulfil its ambitious targets to tackle climate change. In nature, the main carbon sinks are rainforests, oceans and soil.Stands for ‘Carbon Capture and Utilisation’. To limit warming to 1.5°C, this reduction to zero must take place around 2050.The temperature goal reflects, above all, a vision of the type of society we want for the future. "There will be major difficulties, too, in supplying low-carbon heating to homes and industries as natural gas is phased out.Doug Parr, Greenpeace UK's chief scientist, said it was a "big moment" for the climate but there were questions around plans to allow for international carbon credits which allow the UK to pay to offset its emissions elsewhere in the world. This releases significant levels of carbon dioxide as trees are burned.Climate deniers believe that climate change is only taking place because of natural processes and that human activity has no role. This includes reducing greenhouse gas emissions by switching to renewable power, or capturing greenhouse gases from the atmosphere by planting forests.A term used to describe any process where there is no net release of carbon dioxide (CO2).

However, when the CO2 dissolves in seawater, carbonic acid is formed.